The structure of the complex Os-3(mu-H)(CO)(9) (mu(3), eta(2)-C2H) has been determined using X-ray data collected at low temperature (100 K); all hydrogen atoms have been located. The asymmetric unit is formed by two molecules joined through hydrogen bonds involving the hydrogen atoms of C2H moiety and the oxygen atoms of carbonyl groups. The complex crystallizes in the monoclinic space group P(2)1/c with a = 12.94040(2), b = 15.4705(2), c = 16.0164(2) angstrom, beta = 106.0860(10)degrees, and V = 3,080.85(7) angstrom(3), Z = 8. A molecule is formed by a triangular Os-3 cluster, with metal atoms bearing terminal CO groups. The acetylenic residual is formally pi-bonded to two Os atoms in a perpendicular mode and sigma-linked to the third Os atom. A bridging hydride atom completes the coordination.
Hydrogen Atoms Location in Os-3(mu-H)(CO)(9)(mu(3),eta(2)-C2H) from Accurate X-Ray Data at 100 K
Bertolotti FedericaMembro del Collaboration Group
;
2010-01-01
Abstract
The structure of the complex Os-3(mu-H)(CO)(9) (mu(3), eta(2)-C2H) has been determined using X-ray data collected at low temperature (100 K); all hydrogen atoms have been located. The asymmetric unit is formed by two molecules joined through hydrogen bonds involving the hydrogen atoms of C2H moiety and the oxygen atoms of carbonyl groups. The complex crystallizes in the monoclinic space group P(2)1/c with a = 12.94040(2), b = 15.4705(2), c = 16.0164(2) angstrom, beta = 106.0860(10)degrees, and V = 3,080.85(7) angstrom(3), Z = 8. A molecule is formed by a triangular Os-3 cluster, with metal atoms bearing terminal CO groups. The acetylenic residual is formally pi-bonded to two Os atoms in a perpendicular mode and sigma-linked to the third Os atom. A bridging hydride atom completes the coordination.
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